大联考答案

因为AB,D分别是四边形ABC)的外角∠MD,∠MDA的平分线，所以LADE=2∠MDA,∠DAE=号∠NAD,所以∠ADE+∠DAE=(LHDA+∠NAD)=3×240=120m.所以∠E=1809-(∠A1)+∠DA)=60P.

以f(x)的最小正周期为元.又2红=，所以u=2,所以所以fx)=2sn(2x-）f(x)=sin(2x+p),将点（行，0）的坐标代入得2×选②：因为函数f(x)的图象的一条对称轴为直线x=-吾+9...

四、解答题：本大题共6小题，共T0分。解答应写出必要的文宇说明、证明过程及演算步骤。17.(本小题满分10分)设集合A={.lx2=2x-3<0},集合B={xl2-a<x<2+a.(1)若a=2,...

22.5综合与实践测量与误差.·高2米的标杆CD的影子DE解：这种测量方法可行为2米，即CD=DE,..BD=AB.理由如下：如图，过点M作MF⊥AB于点F,设旗杆高AB为x米.过点F作！...

因此f(x)的单调递增区间是(0，)，单调递减区间是(e,十o∞).…4分(2)解：由nx≤ax-,得a2--1m200≥n.2令s(x)1则有g(x)=21nx十1……………………………………5分令k(x)=-x-2lnx1,显然(...

-

综合能力评估试题(11)参考答案及部分解析参考答案1-5 BCBCB6-10 ABAAC11-15 ABCCB 16-20 BCAAC21-25 DBAAD 26-30 BCBBC31-35 CDACA 36-40 FEADB41-45 ABDAC 46-5...

参考答案1-5 BCBAB6-10 AACCA11-15 CBBAB16-20 CCAAB21-25 CADAD26-30 CDCAB31-35 CBADD36-40 FCDGB41-45 DBACB46-50 DACDB51-55 ABDCC56.the57.its58.that whic...

19.(★★)（本小题满分12分）20.(女★)（本小题满分12分美国对中国芯片的技术封锁激发了中国“芯”的研究热潮.某公司研发己知幂函数f(x)=x-n的A,B两种芯片都已经获得...

第8期《三角函数（三角恒等变换）》①高考链接1.B解析：已知sin(a-B)=sin ccos B-cos asin B=3co esinB-石，所以sn(a+B）-B=子，所以答案专页第3页

24.(1分)如图，在平面直角坐标系中，抛物线y---1,0),与y轴交于点C(1)求抛物线的函数解析式；3+c的图象与x轴交于点A(3,0)和（2)若将直线AC绕点A顺时针旋转交抛物...

6母55%☐123：59〈数学试题+答案.pdf20.(本小题满分12分)在锐角△MBC中，已知角4，R,C所对的边分别为a,bc,向量m=(a,simB),b+cn=(b-e，sinA0,且m/m.c+a(1)求角C:(1)...

己有能力改善自己的状况。15.C。根据文章大意可知，作者母亲感谢女儿“照顾好”自己，为了健康能够坚持减肥。第7期A4版Keys:(One possible version)写作一招鲜Hell...

听一篇短文，回答第16-20小题。(M)Good morning,everyone.My name is Peter.I'm a middle school student.I like watchingchat shows,especially Happy Camp.It...

43.考查名词词义辨析。句意：这种兴奋让我像一我终于决定坐下来。A.take乘坐：B.quit放弃；C,个4岁的孩子一样蹦蹦跳跳。A.excitement兴奋；reserve预定，保留；D...

第四部分写作（共两节，满分40分）第一节应用文写作（满分15分）假定你是李华，你校正在组织英语演讲比赛。请以生活中你最难忘的人为主题，写一篇演讲稿参赛，内...

Seeing I,a short,overweight tourist,stumbled in,49 and suffering from heat stroke,they all第一节immediately came forward and 50 me into an假定你是李华...

,but it wasn t longbefore I dropped the form.There was just no way,I thought,for Hani to教山西渠杰琪孟振华安徽郑德兵山东张传勇本报采编中心教(听力材料...

Hainan has also seen more than 266.7 hectares of第二节阅读下面材料，根据其内容和所给段落开the gibbons'habitat 64.restored (restore)through头语续写两段...

30.What did Epley's survey on cab rides reveal?A.Peope prefertositi silenceduringcabridsB.People who talk to drivers love sports more.C.people wh alk...

53.A.doubt B.consider C.explain D.follow 54.A.invest B.solve C.study D.earn 55.A.bother B.volunteer C,afford D.choose 56.A.plans B.conclusions C.sugge...

foods will allow you to get by on smaller snacks throughout the long drive,while skipping the fast-food stops."To stay alert 觉的)，carrots and almond...

ed.What's more,proper diets and exercise should also be paid attention to so that they won't easily put on weight.Besides,re- moving their heavy burde...

第二节书面表达（满分25分） 假定你是李华，你的美国朋友Michael知道中国人很重视家风 传承，他在给你的电子邮件中提到想了解你家的家风。请你给他 回一封电子邮...

6已知mr+君-则-2()A.一92B.-c7.已知函数f(x)及其导数f'(x)的定义域均为R,'(x)在R上单调递增，f'(1+x)为奇函数，若24=3,4=5,3=4,则()A.f(a)<f(b)<f(c)B.f(b)<f(a)...

(Text 10) W:Andrew admired his brother Dave when he was little. When Andrew turned 10,their father passed away after a long battle with cancer.Dave go...